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    <h1 class="post_title">SpringBoot高级</h1><div class="post_meta">
  
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      Oct 6, 2020</span>
      <a href='https://alexzshl.gitee.io/blog/tags/jsr-107' class="post_tag button button_translucent">JSR-107
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      <a href='https://alexzshl.gitee.io/blog/tags/redis' class="post_tag button button_translucent">redis
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    <h2>Overview</h2>
    <nav id="TableOfContents">
  <ul>
    <li><a href="#1-spring-boot-与-缓存">1. Spring Boot 与 缓存</a>
      <ul>
        <li><a href="#jsr-107">JSR-107</a></li>
        <li><a href="#spring缓存抽象">Spring缓存抽象</a></li>
        <li><a href="#整合-redis">整合 Redis</a></li>
      </ul>
    </li>
    <li><a href="#2spring-boot-与-消息">2.Spring Boot 与 消息</a>
      <ul>
        <li><a href="#spring-支持">Spring 支持</a></li>
        <li><a href="#springboot-自动配置">SpringBoot 自动配置</a></li>
      </ul>
    </li>
    <li><a href="#3spring-boot-与-检索">3.Spring Boot 与 检索</a>
      <ul>
        <li><a href="#springboot-整合-elasticsearch">SpringBoot 整合 ElasticSearch</a></li>
      </ul>
    </li>
    <li><a href="#4spring-boot-与-任务">4.Spring Boot 与 任务</a>
      <ul>
        <li><a href="#异步任务">异步任务</a></li>
        <li><a href="#定时任务">定时任务</a></li>
        <li><a href="#邮件任务">邮件任务</a></li>
      </ul>
    </li>
    <li><a href="#5spring-boot-与-安全">5.Spring Boot 与 安全</a></li>
    <li><a href="#6spring-boot-与-分布式">6.Spring Boot 与 分布式</a>
      <ul>
        <li><a href="#分布式应用">分布式应用</a></li>
        <li><a href="#zookeeper-和dubbo">Zookeeper 和Dubbo</a></li>
        <li><a href="#springcloud">SpringCloud</a></li>
      </ul>
    </li>
    <li><a href="#7spring-boot-与-监控管理">7.Spring Boot 与 监控管理</a></li>
    <li><a href="#8spring-boot-与-部署">8.Spring Boot 与 部署</a></li>
  </ul>
</nav>
    <h2 id="1-spring-boot-与-缓存">1. Spring Boot 与 缓存</h2>
<h3 id="jsr-107">JSR-107</h3>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-xml" data-lang="xml"><span style="color:#f92672">&lt;dependency&gt;</span>
    <span style="color:#f92672">&lt;groupId&gt;</span>javax.cache<span style="color:#f92672">&lt;/groupId&gt;</span>
    <span style="color:#f92672">&lt;artifactId&gt;</span>cache-api<span style="color:#f92672">&lt;/artifactId&gt;</span>
    <span style="color:#f92672">&lt;version&gt;</span>1.1.1<span style="color:#f92672">&lt;/version&gt;</span>
<span style="color:#f92672">&lt;/dependency&gt;</span>
</code></pre></div><h3 id="spring缓存抽象">Spring缓存抽象</h3>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#f92672">import</span> org.springframework.cache.Cache<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.cache.CacheManager<span style="color:#f92672">;</span>
</code></pre></div><p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210301090240452.png" alt="image-20210301090240452"></p>
<p>快速体验缓存:</p>
<ol>
<li>开启基于注解的缓存 <code>@EnableCaching</code></li>
<li>给相应方法添加缓存注解 <code>@Cacheable(cacheNames = {&quot;emp&quot;}, condition = &quot;#id&gt;1&quot;)</code></li>
</ol>
<p>默认使用的CacheManager是: ConcurrentMapCacheManager, 是一个内部实现的缓存机制,使用hashmap保存在内存中,应用重启所有缓存数据清空. 实际开发中一般使用redis/memcache/ehcache等成熟的缓存中间件</p>
<h3 id="整合-redis">整合 Redis</h3>
<p>redis用途: 数据库, 缓存, 消息中间件</p>
<p>只需要导入 redis , springboot 就会自动使用 redis 作为 CacheManager</p>
<p>连接云服务器,使用docker-redis</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-shell" data-lang="shell"><span style="color:#75715e"># 目前版本是 6.2</span>
docker pull redis

docker run -dp 7379:6379 --name myredis redis
</code></pre></div><div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#f92672">&lt;</span>dependency<span style="color:#f92672">&gt;</span>
            <span style="color:#f92672">&lt;</span>groupId<span style="color:#f92672">&gt;</span>org<span style="color:#f92672">.</span><span style="color:#a6e22e">springframework</span><span style="color:#f92672">.</span><span style="color:#a6e22e">boot</span><span style="color:#f92672">&lt;/</span>groupId<span style="color:#f92672">&gt;</span>
            <span style="color:#f92672">&lt;</span>artifactId<span style="color:#f92672">&gt;</span>spring<span style="color:#f92672">-</span>boot<span style="color:#f92672">-</span>starter<span style="color:#f92672">-</span>data<span style="color:#f92672">-</span>redis<span style="color:#f92672">&lt;/</span>artifactId<span style="color:#f92672">&gt;</span>
        <span style="color:#f92672">&lt;/</span>dependency<span style="color:#f92672">&gt;</span>
</code></pre></div><p>引入 redis 后, springboot基于自动配置原理自动使用redis作为缓存中间件(基于注解的配置使用cache方式)</p>
<p>此外也可以主动使用自动注入的bean: reidsTemplate 和 stringRedisTemplate</p>
<h2 id="2spring-boot-与-消息">2.Spring Boot 与 消息</h2>
<p>JMS, AMQP, RabbitMQ</p>
<p>消息服务两个重要概念: 消息代理 和 目的地</p>
<p>消息队列主要有两种形式的目的地: 队列 和 主题</p>
<p>JMS (Java Message Service) Java消息服务, 是基于JVM消息代理的规范. ActiveMQ, HornetMQ是JMS的具体实现</p>
<p>AMQP(Advanced Message Queuing Protocal) 高级消息队列协议, 也是一个消息代理的规范, 兼容JMS. RabbitMQ是AMQP的实现</p>
<h3 id="spring-支持">Spring 支持</h3>
<p>Spring-jms 提供了对 JMS 的支持</p>
<p>spring-rabbit 提供了对AMQP的支持</p>
<p>需要 ConnectionFactory的实现来连接消息代理</p>
<p>提供 JmsTemplate, RabbitTemplate 来发送消息</p>
<p>@JmsListener (JMS), @RabbitListener (AMQP) 注解在方法上监听消息代理发布的消息</p>
<p>@EnableJms, @EnableRabbit 开启支持</p>
<h3 id="springboot-自动配置">SpringBoot 自动配置</h3>
<p>JmsAutoConfiguration</p>
<p>RabbitAutoConfiguration</p>
<h4 id="springboot-整合-rabbitmq">SpringBoot 整合 RabbitMQ</h4>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-xml" data-lang="xml"><span style="color:#f92672">&lt;dependency&gt;</span>
            <span style="color:#f92672">&lt;groupId&gt;</span>org.springframework.boot<span style="color:#f92672">&lt;/groupId&gt;</span>
            <span style="color:#f92672">&lt;artifactId&gt;</span>spring-boot-starter-amqp<span style="color:#f92672">&lt;/artifactId&gt;</span>
        <span style="color:#f92672">&lt;/dependency&gt;</span>
</code></pre></div><p>RabbitTemplate: 发送和接收消息</p>
<p>AmqpAdmin:  系统管理功能组件, 创建队列/exchange等</p>
<p>默认的MessageConverter是Simple&hellip;</p>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210301162635876.png" alt="image-20210301162635876"></p>
<p>使用jackson MessageConverter:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#f92672">import</span> org.springframework.amqp.support.converter.Jackson2JsonMessageConverter<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.amqp.support.converter.MessageConverter<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.context.annotation.Bean<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.context.annotation.Configuration<span style="color:#f92672">;</span>

<span style="color:#a6e22e">@Configuration</span>
<span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">AmqpConfig</span> <span style="color:#f92672">{</span>

    <span style="color:#a6e22e">@Bean</span>
    <span style="color:#66d9ef">public</span> MessageConverter <span style="color:#a6e22e">messageConverter</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
        <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">new</span> Jackson2JsonMessageConverter<span style="color:#f92672">();</span>
    <span style="color:#f92672">}</span>
<span style="color:#f92672">}</span>
</code></pre></div><p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210301162457458.png" alt="image-20210301162457458"></p>
<p><strong>监听机制</strong></p>
<p>使用场景: 例如下单之后产生订单并且发布消息给处理中心, 处理中心需要监听相应的消息队列处理新的订单</p>
<p>@EnableRabbit 加在入口类Application上</p>
<p>@RabbitListener(queues = {&ldquo;atguigu.news&rdquo;}) 加在service方法上</p>
<p>说明: 被注解的service方法是消费者视角, 系统在监听到相应队列的消息后自动调用此方法, 消息作为第一个参数传递给方法</p>
<p><strong>rabbitmq管理工具</strong></p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java">amqpAdmin<span style="color:#f92672">.</span><span style="color:#a6e22e">declareExchange</span><span style="color:#f92672">(</span><span style="color:#66d9ef">new</span> DirectExchange<span style="color:#f92672">(</span><span style="color:#e6db74">&#34;amqpadmin.exchange&#34;</span><span style="color:#f92672">));</span>	
</code></pre></div><h2 id="3spring-boot-与-检索">3.Spring Boot 与 检索</h2>
<p>Elasticsearch, Solr</p>
<p>Linux-docker-elasticsearch 安装</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-shell" data-lang="shell">docker search elasticsearch

docker pull elasticsearch

docker run -d -p 9200:9200 -p 9300:9300 --name es elasticsearch:7.9.3

<span style="color:#75715e"># es 默认占用2g内存, 一般的云服务器无法承受甚至直接无法启动docker容器,需要指定占用内存大小</span>
docker run -e ES_JAVA_OPTS<span style="color:#f92672">=</span><span style="color:#e6db74">&#34;-Xms128m -Xmx128m&#34;</span> -d -p 9200:9200 -p 9300:9300 --name es elasticsearch:7.9.3

<span style="color:#75715e"># es 默认占用2g内存, 一般的云服务器无法承受甚至直接无法启动docker容器,需要指定占用内存大小</span>
docker run -e ES_JAVA_OPTS<span style="color:#f92672">=</span><span style="color:#e6db74">&#34;-Xms256m -Xmx256m&#34;</span> -e <span style="color:#e6db74">&#34;discovery.type=single-node&#34;</span> -d -p 9200:9200 -p 9300:9300 --name es elasticsearch:7.9.3

docker pull kibana

docker run -dp 5601:5601 --name kibana kibana:7.9.3

<span style="color:#75715e"># ELASTICSEARCH_URL 环境变量适用于 v5.x 版本; 如果是 v6/7版本, 需要进入容器内部修改kibana配置文件指定es地址</span>
docker run -e ELASTICSEARCH_URL<span style="color:#f92672">=</span>http://47.115.139.117:9200/ -dp 5601:5601 --name kibana kibana:7.9.3

<span style="color:#75715e"># 如果无法访问 kibana, 可能是url错误, 需要手动设置</span>
docker exec -it kibana /bin/bash
vi config/kibana.yml
<span style="color:#75715e"># 修改 elasticsearch.hosts</span>
<span style="color:#75715e"># (可选) 修改显示语言 i18n.locale: &#34;zh-CN&#34;</span>
exit
docker restart kibana
<span style="color:#75715e"># 然后较新版的 kibana 启动需要较长时间,可能几分钟, 请耐心等待</span>
</code></pre></div><p><a href="http://47.115.139.117:9200/">阿里云 测试 es服务</a></p>
<p><a href="http://47.115.139.117:5601/app/kibana#/dev_tools/">阿里云 访问 Kibana</a></p>
<p>通过rest操作es:</p>
<p><a href="http://47.115.139.117:9200/test/_doc/1">简单的 get api</a></p>
<h3 id="springboot-整合-elasticsearch">SpringBoot 整合 ElasticSearch</h3>
<p>步骤:</p>
<ul>
<li>引入 spring-boot-starter-data-elasticsearch. 如果使用spring, 引入 elasticsearch-rest-high-level-client</li>
<li>安装 spring data 对应版本的 elasticsearch</li>
<li>application.yml 配置es服务器地址:端口 <code>spring.elasticsearch.rest.uris</code></li>
<li>spring boot 自动配置的 ElasticsearchRepository, ElasticSearchTemplate, Client</li>
<li>测试 ElasticSearch</li>
</ul>
<p>三种es提供的 JAVA API:</p>
<ul>
<li>RestHighLevelClient</li>
<li>ElasticsearchRepository: 需要编写接口继承此接口,指定bean的泛型类型以及id类型. 类似于mybatisplus提供好的的mapper</li>
<li>ElasticsearchRestTemplate</li>
</ul>
<h2 id="4spring-boot-与-任务">4.Spring Boot 与 任务</h2>
<h3 id="异步任务">异步任务</h3>
<p>配置注解: @EnableAsync</p>
<p>Service方法注解: @Async</p>
<p>controller 中调用异步方法时不再阻塞(否则的话,表现为访问网页时转圈等待)</p>
<h3 id="定时任务">定时任务</h3>
<p>配置注解: @EnableScheduling</p>
<p>Service方法注解: @Scheduled(cron = &ldquo;* * * * * MON-SAT&rdquo;)</p>
<p>cton 是用来定义 定时 的表达式</p>
<p><code>* * * * * MON-SAT</code> 每秒 周一~周六</p>
<p>0 * * * * MON-SAT` 每分 周一~周六</p>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210302185241214.png" alt="image-20210302185241214"></p>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210302202744114.png" alt="image-20210302190732013"></p>
<h3 id="邮件任务">邮件任务</h3>
<p>依赖: spring-boot-starter-mail</p>
<p>配置: MailProperties</p>
<p>自动装配: JavaMailSender</p>
<h2 id="5spring-boot-与-安全">5.Spring Boot 与 安全</h2>
<p>Spring Security</p>
<p>Shiro</p>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210302202831941.png" alt="image-20210302202744114"></p>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210302190732013.png" alt="image-20210302202831941"></p>
<p>认证: authentication 证明你是谁</p>
<p>授权: authorization 你能干什么</p>
<p>默认 情况 POST/DELETE 请求会被拦截,需要附加 _csrf token</p>
<h2 id="6spring-boot-与-分布式">6.Spring Boot 与 分布式</h2>
<p>分布式</p>
<p>Dubbo / Zookeeper</p>
<p>Spring Boot / SpringCloud</p>
<h3 id="分布式应用">分布式应用</h3>
<h3 id="zookeeper-和dubbo">Zookeeper 和Dubbo</h3>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210303113816847.png" alt="image-20210303113559095"></p>
<h4 id="zookeeper">Zookeeper</h4>
<p>注册中心</p>
<h4 id="dubbo">Dubbo</h4>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210303133533458.png" alt="image-20210303113816847"></p>
<p>Provider Consumer</p>
<p>Linux 安装 Zookeeper (Docker方式)</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-shell" data-lang="shell">docker run -d --name zookeeper --restart always zookeeper

<span style="color:#75715e"># 仅暴露 2181 端口, 入门</span>
docker run -dp 2181:2181 --name zookeeper --restart always zookeeper
</code></pre></div><h3 id="springcloud">SpringCloud</h3>
<p><img src="https://gitee.com/alexzshl/picbed/raw/master/image-20210303113559095.png" alt="image-20210303133533458"></p>
<p><strong>注册中心</strong></p>
<p>依赖: eureka-server</p>
<p>Application 注解 @EnableEurekaServer</p>
<p>配置文件:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-yml" data-lang="yml"><span style="color:#f92672">spring</span>:
  <span style="color:#f92672">application</span>:
    <span style="color:#f92672">name</span>: <span style="color:#ae81ff">eureka-server</span>

<span style="color:#f92672">server</span>:
  <span style="color:#f92672">port</span>: <span style="color:#ae81ff">8761</span>

<span style="color:#f92672">eureka</span>:
  <span style="color:#f92672">instance</span>:
    <span style="color:#f92672">hostname</span>: <span style="color:#ae81ff">eureka-server</span>
  <span style="color:#f92672">client</span>:
    <span style="color:#f92672">register-with-eureka</span>: <span style="color:#66d9ef">false</span>
    <span style="color:#f92672">fetch-registry</span>: <span style="color:#66d9ef">false</span>
    <span style="color:#f92672">service-url</span>:
      <span style="color:#f92672">defaultZone</span>: <span style="color:#ae81ff">http://localhost:8761/eureka/</span>

</code></pre></div><p><strong>服务提供者</strong></p>
<p>依赖: eureka-client</p>
<p>Application 注解: @EnableDiscoveryClient (可选?)</p>
<p>正常编写 Restful API</p>
<p>配置:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-yml" data-lang="yml"><span style="color:#f92672">spring</span>:
  <span style="color:#f92672">application</span>:
    <span style="color:#f92672">name</span>: <span style="color:#ae81ff">provider-ticket</span>

<span style="color:#f92672">server</span>:
  <span style="color:#f92672">port</span>: <span style="color:#ae81ff">8081</span>

<span style="color:#f92672">eureka</span>:
  <span style="color:#f92672">instance</span>:
    <span style="color:#f92672">prefer-ip-address</span>: <span style="color:#66d9ef">true</span>
  <span style="color:#f92672">client</span>:
    <span style="color:#f92672">register-with-eureka</span>: <span style="color:#66d9ef">true</span>
    <span style="color:#f92672">fetch-registry</span>: <span style="color:#66d9ef">true</span>
    <span style="color:#f92672">service-url</span>:
      <span style="color:#f92672">defaultZone</span>: <span style="color:#ae81ff">http://localhost:8761/eureka/</span>
</code></pre></div><p><strong>服务消费者</strong></p>
<p>依赖: eureka-client</p>
<p>Application 注解: @EnableDiscoveryClient</p>
<p>正常编写 Restful API, 但是可能会调用其他服务</p>
<p><strong>服务提供者</strong> 和 <strong>服务消费者</strong> 是一个相对概念, 使用者 也可以提供服务并将自己注册到服务中心</p>
<p>配置:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-yml" data-lang="yml"><span style="color:#f92672">spring</span>:
  <span style="color:#f92672">application</span>:
    <span style="color:#f92672">name</span>: <span style="color:#ae81ff">consumer-user</span>

<span style="color:#f92672">server</span>:
  <span style="color:#f92672">port</span>: <span style="color:#ae81ff">8082</span>

<span style="color:#f92672">eureka</span>:
  <span style="color:#f92672">instance</span>:
    <span style="color:#f92672">prefer-ip-address</span>: <span style="color:#66d9ef">true</span>
  <span style="color:#f92672">client</span>:
    <span style="color:#f92672">register-with-eureka</span>: <span style="color:#66d9ef">true</span>
    <span style="color:#f92672">fetch-registry</span>: <span style="color:#66d9ef">true</span>
    <span style="color:#f92672">service-url</span>:
      <span style="color:#f92672">defaultZone</span>: <span style="color:#ae81ff">http://localhost:8761/eureka/</span>

</code></pre></div><p>springcloud 使用 restful 方式来调用服务:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java"><span style="color:#f92672">import</span> org.springframework.boot.SpringApplication<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.boot.autoconfigure.SpringBootApplication<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.cloud.client.discovery.EnableDiscoveryClient<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.cloud.client.loadbalancer.LoadBalanced<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.context.annotation.Bean<span style="color:#f92672">;</span>
<span style="color:#f92672">import</span> org.springframework.web.client.RestTemplate<span style="color:#f92672">;</span>

<span style="color:#a6e22e">@SpringBootApplication</span>
<span style="color:#a6e22e">@EnableDiscoveryClient</span>
<span style="color:#66d9ef">public</span> <span style="color:#66d9ef">class</span> <span style="color:#a6e22e">ConsumerApplication</span> <span style="color:#f92672">{</span>

    <span style="color:#66d9ef">public</span> <span style="color:#66d9ef">static</span> <span style="color:#66d9ef">void</span> <span style="color:#a6e22e">main</span><span style="color:#f92672">(</span>String<span style="color:#f92672">[]</span> args<span style="color:#f92672">)</span> <span style="color:#f92672">{</span>
        SpringApplication<span style="color:#f92672">.</span><span style="color:#a6e22e">run</span><span style="color:#f92672">(</span>ConsumerApplication<span style="color:#f92672">.</span><span style="color:#a6e22e">class</span><span style="color:#f92672">,</span> args<span style="color:#f92672">);</span>
    <span style="color:#f92672">}</span>

    <span style="color:#a6e22e">@Bean</span>
    <span style="color:#a6e22e">@LoadBalanced</span>
    <span style="color:#66d9ef">public</span> RestTemplate <span style="color:#a6e22e">restTemplate</span><span style="color:#f92672">()</span> <span style="color:#f92672">{</span>
        <span style="color:#66d9ef">return</span> <span style="color:#66d9ef">new</span> RestTemplate<span style="color:#f92672">();</span>
    <span style="color:#f92672">}</span>

<span style="color:#f92672">}</span>
</code></pre></div><p>对于 service 而言, 只需要注入 restTemplate, 即可调用其他服务:</p>
<div class="highlight"><pre style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4"><code class="language-java" data-lang="java">Ticket ticket <span style="color:#f92672">=</span> restTemplate<span style="color:#f92672">.</span><span style="color:#a6e22e">getForObject</span><span style="color:#f92672">(</span><span style="color:#e6db74">&#34;http://PROVIDER-TICKET/ticket&#34;</span><span style="color:#f92672">,</span> Ticket<span style="color:#f92672">.</span><span style="color:#a6e22e">class</span><span style="color:#f92672">);</span>
</code></pre></div><h2 id="7spring-boot-与-监控管理">7.Spring Boot 与 监控管理</h2>
<p>spring-boot-starter-actuator</p>
<p>访问 /actuator 路径</p>
<h2 id="8spring-boot-与-部署">8.Spring Boot 与 部署</h2>
<p>Spring Loaded</p>
<p>JRebel</p>
<p>Spring Boot Devtools</p>

    
      
    
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